Reno Fire Department is investigating a series of fires set early Wednesday morning at two fast food restaurants in south Reno. The fires were reported just after 3:00 a.m. at Del Taco and KFC on S. Virginia Street near Meadowood Mall. Firefighters responded to a report of trash can fires. When they arrived they found signs at the restaurants were also on fire. The fire also spread to the exterior of the Del Taco building. A possible suspect was questioned at the scene, but investigators have not said if that person was arrested.